How to check the earth line?

In this video, I have tried to show, 'How to check the earth line' in Bangla. Lightning lines or earthing lines must be installed to protect electrical equipment from electrical accidents and natural lightning, and it should be checked whether the line is working properly. With this video, I have tried to show it beautifully and clearly in Bangla language. I have used KEW-6516 digital multi function meter for this purpose. With the help of this multi function meter not only earthing test can be done, but also continuity test, voltage test, frequency test, insulation test, Loop high test, Loop ATT test, RCD (ELCB) test, frequency rotation test can be done. Earth line test with any electrical line including 220 volts, 440 volts, 11000 volts.